Sigma GP Titan Tank is a self-adhesive membrane for application to the external side of structures, the membrane protects against both ground gases and VOCs in accordance with BS8485:2015 and water ingress in accordance with BS8102:2009. Titan Tank is a post-applied type-A membrane which incorporates a self-adhesive, with an upper surface finish of SIGMA GP TITAN FLEX and a lower surface finish of siliconized polypropylene release film.